Name: Thousand Year Canon of Solar Eclipses 1501 to 2500, Paperback/Fred Espenak
Brand: Astropixels Publishing
Price: 211.99 RON
Availability: InStock

Descriere & specificații

The Thousand Year Canon of Solar Eclipses 1501 to 2500 contains maps and data for each of the 2,389 solar eclipses occurring over the ten-century period centered on the present era. The eclipse predictions are based on the Jet Propulsion Lab's DE406 - a computer ephemeris used for calculating high precision coordinates of the Sun and Moon for thousands of years into the past and future. Section 1 of the Canon presents fundamental concepts including eclipse classification and the visual appearance of each type of eclipse. Section 2 discusses the eclipse predictions, the constants used and Delta T. A statistical analysis of eclipse frequency, extremes in eclipse magnitude, greatest central duration and quincena combinations are covered in Section 3. A concise explanation of the data contained in the solar eclipse catalog (Appendix A) appears in Section 4 while Section 5 offers a complete description of information presented in each of the solar eclipse maps (Appendix B). The primary content of the Thousand Year Canon of Solar Eclipses resides in the two appendices. Appendix A is a comprehensive catalog listing the essential characteristics of each eclipse. These include the calendar date and time of greatest eclipse, Delta T, lunation number, Saros series number, gamma, eclipse magnitude, geographic coordinates of greatest eclipse, Sun's altitude and azimuth, central path width and central line duration. Appendix B is an atlas of maps depicting the geographic regions of visibil